E - led behavior, Led behavior – Keyspan 1.9 User Manual
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7.1.e - LED Behavior
The Keyspan High Speed USB Serial Adapter part number USA-19QW comes equipped with a
green LED light that reports the status of the Keyspan adapter USB hardware and serial port.
The following table shows all of the possible states of these LED light and what they mean:
Color
State
Significance
Green
Off
The Keyspan adapter is not connected or
not receiving power from your computer
Green
On-Blinking Slowly
The Keyspan adapter software and
hardware are working properly. The
Keyspan serial port is available for use.
Green
On-Steady Light
The Keyspan serial port is 'in use' by an
application on your computer and is
ready to send and receive data to and from
your serial device.
Green
On-Blinking Rapidly
The Keyspan serial port is sending and/or
receiving data
Please note that the LED light is only available on the Keyspan High
Speed USB Serial Adapter part number USA-19QW. It is not
available on other part numbers.
Keyspan:High Speed USB Serial Adapter for Mac OS-v1.9 User Manual
This User Manual applies to the Keyspan High Speed USB Serial Adapter Software for Mac OS.
(rev 02may12JA)
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